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P3 Particles

Posljednje ažuriranje 3 days ago

21

4.3.1.1 Density of materials

Obavezno

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4.3.1.1

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WS2.4

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4.3.1.1

4.3.1.2 Changes of state

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4.3.1.2

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4.3.1.2

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4.3.1.2

4.3.2.1 Internal Energy

4.3.2.2 Temperature changes in a system and specific heat capacity

4.3.2.3 Chanes of state and specific latent heat

4.3.3.1 Particle motion in gases

4.3.3.2 Pressure in gases

4.3.3.3 Increasing the pressure of a gas

Pitanje 1

1.

What is the formula for density?

Density = Volume / Mass

Density = Mass / Volume

Density = Mass x Volume

Density = Mass + Volume

Pitanje 2

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Pitanje 3

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A small gold object weighs 200 grams and its volume is 10 cubic centimeters. Can you calculate its density?

Pitanje 4

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A cube of steel has a mass of 800 grams and a volume of 100 cubic cm. Calculate the density.

Pitanje 5

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What does this tell you about the density?

If the object floats, the object is more dense than water.

If the object sinks, the object is more dense than water

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Pitanje 16

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Which change of state happens when a gas loses energy and changes into a liquid?

melting

condensation

vaporization

freezing

Pitanje 17

17.

What happens to the particles of a substance when the substance freezes?

They slow down.

They stop moving.

They stay the same.

They speed up.

Pitanje 18

18.

If a substance has a melting point of -157 degrees Celsius and a boiling point of -25 degrees Celsius, what state of matter will it be in at room temperature (21 degrees C)?

A Solid

B Liquid

C Gas

D Not enough information

Pitanje 19

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Which state has particles tightly packed together?

Solid

Gas

Liquid

Brittle

Pitanje 20

20.

Label the states during melting and evaporating / boiling

Drugi mogući odgovor:

Solid and liquid

liquid and gas

Pitanje 21

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Drugi mogući odgovor:

null

null

null

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